Wireless speaker



FIG. 1 is a perspective view of a wireless speaker showing my new design;

FIG. 2 is a left view thereof;

FIG. 3 is a right view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines shown in the drawings represent unclaimed portions of the wireless speaker and form no part of the claimed design. 

CLAIM The ornamental design for a wireless speaker, as shown and described. 